Internal-combustion engine.



' J. L. LAWRENCE. INTERNAL COMBIEJSIION ENGINE. APPLICATION FILED-FEB. 16. 1912.

1,178,737. Patentd Apr. 11,1916.

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JAMES LOUIS LAWRENCE, OF MEXICO, MEXICO, ASSIGNOR, 0F ONE-HALF T0 CHARLES L. SEEGER, OF MEXICO, MEXICQ.

INTERNAL-COMBUSTION ENGINE.

Patented Apr. 11, rain.

Application filed February 16,1912. Serial No. 678,098.

To all whom it may concern:

Be it known that I, James L. Lawunxcn, a. citizen of the United States, residing in the city of Mexico, Republic of Mexico, have nmde a certain new and useful Invention in lnternal-Combustion Engines, of which the following is a specification.

This invention relates to internal combustion engines.

The object of the invention is to simplify and improve the construction of internal combustion engines, to render the same more eflicient in operation, more economical to manufacture. and more readily and easily dismen'ibered for repair.

Other objects of the invention will appear more fully hereinafter.

The invention consists substantially in the construction; combination, location, and relative arrangement of parts, all as will be more fully hereinafter set forth, as shown in the accompanying drawings, and finally pointed out in the appended claim.

In the accompanying drawings, Figure 1 is'a longitudinal central sectional view of an internal combustion engine embodying the principles of my invention. Fig. 2 is avies. partly in elevation and partly in section. ofthe same, showing the'relation of the main shaft and the eccentric shaft for operating the valve sleeves. a

The same part is designated by the same reference numeral wherever it occurs.

In the drawing 1, is the engine cylinder, which is mounted on or secured to a base portion or casing 22, the latter serving as the crank case. The cylinder is open at both ends. The end thereof which is secured to the casing 22, opens into or communicates freely with the interior of the casing 22. If desired, and preferably, the cylinder is constructed with a jacket chamber 2for the circulation of water or other cooling medium. The piston 3 operates in the cylinder 1, and is connected by connecting rod 4 to crank pin 5, of crank 24, of the main power shaft the said shaft extending through the casing 22, and the crank 24 being located within said casing. The connecting rod 1 extends through the casing 22 and into the open. end of the cylinder where it is pivotally connected to the piston in the usual or any well known manner.

The outer open end of the cylinder is water or other cooling'medium.

rlosedby a head or cap 9, adapted to be bolted or otherwise secured onto the end of the cylinder, as, for instance, by means of the cap screens 11. If desired, and preferably, the head or cap 9 is constructed with a jacket chamber 12, for. the circulation of A spark plug or:.other charge igniting device 8 is arranged tov project through theghead or cap 9 into the end of the cylinder. The cylinder header cap 9, is provided with 'a depending petticoat or rim portion which is of larger internal diameter than the external diameter of the cylinder, and this depending rim portion or petticoaten compasses the cylinder? for a considerable portion of its length haying a space or open ended chamber 27. between the exterior surface of the-cylinde and the interior surface I of the rim portion orpetticoat of the head or cap.- The cooling chamber 12, formed in the head or cap 9, also continues into the rim portion or petticoatQG. i

I have not shown the connections 1 for supplying or circulating'the cooling'mediu'm,

to or through the cylinder and head or cap jackets 2, 12, as such details form no part of my present invention and are familiar to persons skilled in the art.

Nested or teles'copcd, the one inside the other and upon the exterior surface of the cylinder are the valve sleeves 1'7, 18, said sleeves being arranged to extend into and to operate in the annular-space 27 between the cylinder and the depending rim 26, of the head or cap 9.v The sleeves 17, 18, are mounted to slide or to reciprocate longitudinally, relatively to each other and to the cylinder. Any suitablejor convenient means may be employed to reciprocate the sleeves. A simple arrangement is shown wherein connecting rods 15, 16; are respectively con-' nccted to said sleeves 17 18, and to. cranks 20,19 on a counter shaft 28, driven from the power shaft 25, by any suitable arrangement of gearing connections, as for instance, a sprocket chain 7 operating over sprockets (3, 21, respectively carried by shafts 25, 28.

r The gear connections intermediate the shafts 25, 28 should bear such relation as to properly= time the valve sleeve operating shaft 28, and hence the valve sleevemovements,

with reference to the main piston movements to securefihcdesired timing of supply of explosive charge and escape of the of explosion, in a manner well understood 1n the art.

The explosive mixture is supplied to the cylinder and the gases of explosion are exhausted from the cylinder through the port openings 10, 11, which are provided through the cylinder and extension of the head or cap and also through the valve sleeves, and which are controlled by the sliding movenients of the valve sleeves. The fuel supply and exhaust connections may be secured to the depending rim portion of the cap 9, by flanges 13, or in any other suitable or convenient manner. If desired,;and preferably, an inclosing shield or casing 35, may be arranged to surround the valve sleeves 1'7, 18 to exclude dust and dirt from the working or bearing suri aces thereof.

From the foregoing description it will be seen that I employ a fixed cylinder and I place the valve sleeves upon the exterior surface thereof in surrounding or encompassing relation with reference thereto. It will also be seen that I arrange the depending extension rim or petticoat ot' the cap or head to form a guide inside of which the 'alve sleeves operate the said extension or rim encon'ipassing or surrounding the said valve sleeves. It will also be seen that 1 provide a construction which is very simple and easy to manufacture since I avoid the necessity for any special form of castin The cooling jackets or chambers of the head and cylinder enable me to maintain the explosion chamber wholly inclosed within a double Jacket since the extension or rim of the head or cap surrounds the explosion end of the cylinder. I avoid the provision of any mov ing part within the cylinder except the piston which may be of the ordinary kind such as is commonly used ingasolene engines. In order to gain access to the cylinder for cleaning or repair, or to remove the valve sleeves, it is only vnecessary to take oii the cylinder head or cap, and disconnect the sleeves from their connecting rods. It will also be seen that the crank ease chamber in which the cranks operate may be employed aslareceptacle for lubricating oil, the splash of which from the crank rotations constantly supplies such oil to lubricate the working piston. The chamber or space 27, may likewise be employed as an oil chamber to supply lubricating oil to bearing surfaces of the cylinders. it will also be seen that all packing rings, except those of the piston, are avoided, as the valve sleeves are exposed to the force of the explosion only in the space of the ports 10, 11. The valve sleeves being thus removed from contact with the heated gases, and a water or cooling jacket being interposed between them and the explosion chamber, may be made quite short in length, thereby reducing the friction to a minimum, avoiding the use of packing rings therefor, andreducing the power required to operate them to the lowest possible point.

Having now set forth the object and nature of my invention and a construction embodying the principles thereof, what- I claim as new and useful and of my own invention. and desire to secure by Letters Patent is In an internal combustion engine, a cylinder and piston and a crank shaft connected to the piston, said cylinder having port openings and constructed with a surround.- ing cooling jacket or chamber in combination with a head adapted to be applied to one end of the cylinder to close the same aml havin g an integral depending rim portion or petticoat arranged to encompass and surround the exterior surface of the cylinder end, said head and its depending rim portion constructed with an internal space or chamber for the circulation of a cooling medium therethrough, valve sleeves teleseoped the one inside the other and. upon the exterior surface of the cylinder, and means for reciprocating said sleeves to control said port openings.

In testimony whereof I have hereunto set my hand in the presence of the subscribing witnesses, on this 7th day of February A. 1)., 1912.

Witnesses;

ELY Emo'r PALMER.

FRANK D. Anxonn. 

